Love triangles of TV and film

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Summit Entertainment

Love triangles are the stuff of Hollywood tradition, and the mixed-up relationship between Edward (Robert Pattinson), Bella (Kristen Stewart) and Jacob (Taylor Lautner) is no exception. The "Twilight" trio has been at the forefront of triangles for a few years now, with fans taking sides,...

Love triangles are the stuff of Hollywood tradition, and the mixed-up relationship between Edward (Robert Pattinson), Bella (Kristen Stewart) and Jacob (Taylor Lautner) is no exception. The "Twilight" trio has been at the forefront of triangles for a few years now, with fans taking sides,... (Summit Entertainment)

Angles of the love triangle: Before she watched a guy OD and before she ran off to boarding school, Serena van der Woodsen slept with Nate Archibald. Upon returning to New York, she dated Dan. That went on for a while. Eventually, she went back to Nate. But Dan Humphrey wanted her too. So they...

Angles of the love triangle: Before she watched a guy OD and before she ran off to boarding school, Serena van der Woodsen slept with Nate Archibald. Upon returning to New York, she dated Dan. That went on for a while. Eventually, she went back to Nate. But Dan Humphrey wanted her too. So they... (Patrick Harbron / The CW; Giovanni Rufino / The CW)

Angles of the love triangle: Once upon a time in a small town in Civil War-era Virginia, brothers and best friends Stefan and Damon Salvatore fell hard for the same woman: Katherine, a cunning beauty with brown ringlet curls and hoop skirts. She turned out to be a vampire, naturally. And being...

Angles of the love triangle: Once upon a time in a small town in Civil War-era Virginia, brothers and best friends Stefan and Damon Salvatore fell hard for the same woman: Katherine, a cunning beauty with brown ringlet curls and hoop skirts. She turned out to be a vampire, naturally. And being... (Andrew Eccles / The CW)

Angles of the love triangle: Quinn (Dianna Agron) and Finn (Corey Monteith) were the head cheerleader/quarterback of the football team dream pair. Then came Rachel (Lea Michele) and the glee club, one of the many factors pulling Finn away from the football team and away from Quinn. When Quinn...

Angles of the love triangle: Quinn (Dianna Agron) and Finn (Corey Monteith) were the head cheerleader/quarterback of the football team dream pair. Then came Rachel (Lea Michele) and the glee club, one of the many factors pulling Finn away from the football team and away from Quinn. When Quinn... (Carin Baer / FOX)